Parcel-post chart



T. WEST.

PARCEL POST CHART.

APPLICATION men 1uNE2 4, 1914.

Patented Dec. 30, 1919s 2 SHEETSSHEETv L Fig.1

5573 LOCAL UNIT 1N VEN TOR. 72 7770277 W652 BY WITNESSES.-

T. WEST.

PARCEL POST'CHART.

APPLICATION FILED JUNE 24. 1914.

1,326,240. I Patented Dec. 30,1919 l ,2 SHEETS-SHI IET 2.

Fig.3 -.1% ".2-

5523 LOCAL UNIT 2973 I! f/RST 7N0 0'4 (IN/74A! W CUAUH/VJ l a INVENTOR-WITNESSES: 77

TIMOTHY WEST, OF OAKLAND, CALIFORNIA;

I PARCEL-POST CHART.

Specification of Letters Llat'ent.

Patented Dec. 30, 19119.

Application filed June 24., 1914. Serial No. 846,985.

To all whom it may concern:

Be it known that I, TIMOTHY VEST, a citizen of the United States,residing at'Oakland, in the county of Alameda and State of California,have invented certain new and useful Improvements in Parcel-Post Charts,of which the following is a specification.

This invention relates to a chart to be used in connection with thedetermination of parcel post rates, which has for its 0bject thesimplification of the method of de termining the rates to any unit. Myinvention is intended to be used in connection with a parcel post guide,which gives the unit in which each post-oflice of the United States issituated.

My chart comprises ninety eight unit plates corresponding in number totwice the number of degrees of longitude into which the United States isdivided, the plates representing respectively one unit in the halfdegrees of longitude of the United States. Each plate is divided byintersecting lines, of latitude and lines of longitude into squarescorresponding to the parcel post units and by irregular zone lines intoareas which correspond to the parcel post zones with relation to theparticular unit which the plate represents. In the two abscissa columnsat the left of the plate are arranged the first two digits respectivelyof the parcel post unit numbers and in the ordinate column at the top ofthe sheet are arranged the last two digits respectively of the parcelpost unit numbers. Thus to find the zone in which any unit lies withrelation to the unit which the plate represents, the first two digits ofthe unit number are located in the abscissa column at the left of thesheet and the last two digits of the unit number are located in theordinate column, and the intersection of the column extending to theright of the first digits of the unit number, and the column extendingdown from the last digits of the unit number locates the unit and thezone lines between which said unit lies determines the zone in which theunit is located with relation to the unit which the plate represents.

A device of this character can be made more compact than the presentparcel post maps with the circles drawn thereon, also more accurate inthat no doubt exists as to the zone in which a unit lies, due to thefact that a zone line passes through or close to the abutting corners oftwo adjacent units.

Reference should be had to the accom panying drawings forming a part ofthis specification wherein:

Figure l is a view of my improved chart as arranged for unit 5573.

Fig. 2 is a fragmentary view of the edge I of a chart arranged for unit2973.

Fig. 3 is a view of a chartas arranged, for unit 5523. y

The unit plates of my chart are eachdi- "ided into two sections 1 and 2.Said sections are divided by horizontal lines of longitude, one half ofa degree of longitude apart, and by vertical lines oflatitude, one halfof a degree of latitude apart, into squares equal to one-fourth the areaof one degree longitude by one degree latitude, corresponding to theparcel post units of the United States. In the ordinate columns 3 and 4:at the top of each section 1 and 2 and at the head of the latitudecolumns are arranged the last tWo digits of the parcel post unit numbersfrom O1 to 4:9 and from 51 to 99 respectively. In two abscissa columns 5and 6 at the left of the plates and at the head of the respectivelongitude columns are arranged the first two digits of the parcel postunit numbers. At the head of the columns 5 and 6 are indicated theclirections east and west which denote that the units having numbersbeginning with the digits in said columns are east or west of thelongitude divisional line which divides in half the degree of longitudein which the local unit is located. Zone lines 7 are which divide theplate into zones indicated 1 to S inclusive corresponding to the parcelpost zones with relation to the local unit which the plate -represents.

To find the zone in which unit 3509 lies from unit 5573, by reference toplate 5573, Fig. 1, the first two digits 35 are located in column 5, andthe last two digits 09 are located in column 3, and the columns oflongitude 35 and latitude 09 are followed respectively to the right anddownwardly of the plate to their intersection in zone 6. This shows thatunit 3509 is in the 6th zone from unit 3573. As the first digit 35 islocated in the east column 5, the unit 3509 local unit,

lies east of the divisional line which divides the 55 of longitude inhalf, or east of the 54% of longitude according to the parcel post map.The directions E and WV at the head of columns 5 and 6 determines whatcolumn the first two digits of the unit number are in and makes it easyto find said digits when it is known beforehand in Which direction theunit to be found lies from the The division of the latitude digits inthe columns 3 and i also simplifies the work in finding the last digitsof a unit number.

It will thus be appreciated that with a chart of this character used inconnection with a parcel post guide that the rates from local units arequickly and accurately de termined, such determination being positiveowing to the fact that the lines 7 are plotted in a zig zag mannerrather than in a curve as are the circles drawn on the present maps.

What I claim and wish to cover by Letters Patent is A parcel post chartcomprising in combi nation, a plate divided into a pair of complementalsections each of which has rectangular coordinates, each of saidsections having also irregular curves embodied thereon running along thecoordinate line only the abscissae of points between said curves beingthe first two digits of the numbers of unit areas in given zones asshown on a U. S. parcel post map, and the ordinates of points on each ofsaid plates being the last two digits of the numbers of correspondingareas on said map, said irregular lines defining on the plate the areasof parcel post zones with references to a given center, each or" saidplates having its ordinates arranged in two columns, one of which isheaded by the first two digits of the number of the local unit areas,the digits in the column headed by the local area decreasing from top tobottom and the digits in the other of said columns increasing from topto bottom, on one of said sections the two columns of ordinates havingtheir tops on the same line and on the other of said sections thecorresponding top of said second mentioned column beginning one linebelow the top of the column containing the local unit area.

In testimony whereof I afiix my signature in presence of two witnesses.

TIMOTHY WEST. Witnesses:

R. M. OYARzo, W. A. STOCK.

